Ooni Karu 2.

The Gavler Review.

Ooni Karu 2 Review: Real Wood Flavor in a 34-Pound Footprint

The Ooni Karu 2 ranks number 5 on Gavler's Best Outdoor Pizza Ovens list with an 8.7, and it earns that spot as the most portable real-wood pizza oven most people can buy. It's a 12-inch, roughly 34-pound multi-fuel oven built for cooks who want genuine smoke-and-char flavor without committing to a full-size wood oven — and the honest trade-off is fuel management. Tom's Guide, after weeks of testing, put it plainly: this is an oven where "the heat can be a little unstable with solid fuel," and getting consistent results takes a bit of practice. That's not a defect so much as the nature of cooking with wood.

What it is

The Karu 2 is Ooni's compact multi-fuel oven, the successor to the Karu 12 it effectively replaces. It burns wood or charcoal through a redesigned fuel tray and, with an additional gas adapter sold separately, propane too. The 12-inch cordierite stone reaches 950°F, a borosilicate glass door lets you watch the bake, and the whole unit folds down to a manageable size for storage between cooks. At roughly 34 pounds it's noticeably lighter and more portable than most other real-wood ovens on the market.

The meaningful upgrade over the Karu 12 is heat retention. A redesigned door, improved insulation, and a more even stone all push the same amount of fuel further, which in practice means fewer mid-cook trips to add wood or charcoal and a stone that holds its temperature longer between pies.

In use

Assembly is straightforward but not instant — Tom's Guide's tester described the oven as arriving "half built," requiring the door and chimney to be installed before the first burn-off, a process helped along by clear included instructions (the company's own video walkthrough, by contrast, was flagged as "a little misleading" and reportedly caused some owners to damage their ovens during setup, so stick with the printed guide). Once assembled, a 30-minute burn-off clears any manufacturing residue before the first cook.

With a full tray of fuel, testers got the stone to 750°F in roughly 10 to 12 minutes using a mix of lumpwood charcoal and beech pizza logs — faster than comparable gas ovens in the same price range took to preheat. The trade-off shows up mid-cook: because fuel gets added by eye rather than metered by a dial, heat levels vary between pies and sometimes within a single bake, occasionally producing an unevenly risen crust or a slightly burnt edge. Reviewers who've spent real time with the oven describe this as manageable with a little experience — watch the fuel, top it up before it drops too far, and the variability becomes part of the rhythm rather than a problem.

Cooldown takes about 60 to 90 minutes once the fuel tray is emptied, and the high cook heat makes the stone essentially self-cleaning — wipe it down after use and burn off anything stubborn on the next high-heat cycle.

Strengths

• Real wood flavor at a portable weight. At roughly 34 pounds with folding legs and a removable chimney, the Karu 2 is genuinely easy to move and store, which is rare among ovens that actually burn wood.
• Fast preheat for a solid-fuel oven. Reaching cooking temperature in around 10 to 12 minutes beats several gas-fired competitors in the same price range.
• Improved heat retention over its predecessor. The redesigned door and insulation mean less fuel spent maintaining temperature across a multi-pizza session.
• Reviewer consensus on output quality. TechGearLab notes that the Associazione Verace Pizza Napoletana recommends the redesigned multi-fuel oven, and Woman & Home reported pizzas ready in 90 seconds with crisp bases and fluffy crusts.

The trade-offs — who should skip it

• Fuel management adds a learning curve. If you want a "set it and forget it" oven, the Karu 2's variable heat with solid fuel will frustrate you more than it will teach you. Tom's Guide's cons list flags this directly: "you'll need to stay on top of temperature."
• Gas isn't included. Unlike propane-first ovens, the Karu 2 requires an additional adapter purchase to run on gas at all — plan for that cost if convenience matters more than wood flavor.
• It's pricey once accessories are added. A peel, turning peel, infrared thermometer, and cover all add up quickly; Tom's Guide's own accessory testing pushed the effective cost well past the oven's sticker price.
• 12 inches caps your pizza size. Groups larger than four or five people cooking back-to-back will want a 14- or 16-inch oven instead.

How it compares

The Gozney Roccbox sits one rank above at number 4 with a similar price and footprint, but it flips the fuel priority — propane is the default, with wood available only through an optional burner attachment. Buyers whose default cook is gas with occasional wood flavor tend to prefer the Roccbox's convenience; buyers who want wood as the default fuel and gas as the occasional convenience fit the Karu 2 better. One rank below, the Solo Stove Pi Prime is the budget benchmark — a 12-inch propane-only oven that hits 900°F in under 20 minutes for meaningfully less money, but without any solid-fuel option at all. If flavor from real wood or charcoal is non-negotiable, neither rival fully substitutes for the Karu 2.

The Gavler verdict

An 8.7 that reflects a real strength — this is one of the few genuinely portable ovens that burns actual wood — balanced against the fuel-management learning curve that comes with that choice. The Ooni Karu 2 is the right pick for cooks who care about smoke-and-char flavor and are willing to tend a fire a little to get it, at a weight and price that make it realistic to actually use often rather than leave in storage. If convenience matters more than flavor authenticity, look to the gas-first Roccbox or the budget-friendly Pi Prime instead.

Common Questions

Is the Ooni Karu 2 worth it in 2026?

For most buyers who specifically want wood-fired flavor in a portable oven, yes. It ranks fifth on Gavler's Best Outdoor Pizza Ovens list with an 8.7, and Tom's Guide's own testing called it a pizza oven that 'makes tasty pies worthy of a restaurant or pizzeria' while flagging that the heat 'can be a little unstable with solid fuel' — an honest trade-off for real wood cooking rather than a flaw unique to this oven.

Does the Ooni Karu 2 run on gas?

Yes, but not out of the box. The Karu 2 ships as a wood-and-charcoal oven; propane requires buying Ooni's separate gas adapter, which is an added cost most first-time buyers don't budget for. If you want gas as the default fuel, the all-gas Solo Stove Pi Prime or Gozney Roccbox skip that extra purchase entirely.

How does the Ooni Karu 2 compare to the Gozney Roccbox?

They're similarly priced and similarly sized, but the Roccbox is propane-first with an optional wood-burner attachment, while the Karu 2 is wood-and-charcoal-first with an optional gas adapter. If your default cook is gas with occasional wood flavor, the Roccbox fits that habit better. If wood is the point, the Karu 2 is the more natural fit.